mPower Jump Truck: 12V / 24V Car and Commercial Truck Jump Starter Jumpstarts trucks, buses, cars, boats, RVs  even commercial panel trucks and semis, and of course cars Intelligent: Automatically detects battery voltage system Lightweight (less than 4 lbs) and portable Jumpstarts 12V vehicles up to 30 times without a recharge and 24V vehicles 15 times Multiple electronic safety protection: reverse polarity, reverse charge, short circuit, overload starting override